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Federal authorities investigate letters with 'suspicious substances' mailed to congressional and election offices

8 articles from 6 sources
First reported on Thursday 15 October 2026 at 11:29 EDT by The Philadelphia Inquirer·Latest article on Thursday 15 October 2026 at 17:05 EDT

Summary

Federal authorities are investigating letters with 'suspicious substances' that have been mailed to congressional and election offices nationwide, The Philadelphia Inquirer and ABC News reported on Thursday 15 October, the Inquirer saying the FBI and the Postal Service are investigating. The authorities are urging recipients to treat the mailings as 'potentially hazardous', PBS NewsHour reported, and CBS News said federal investigators are looking into 'suspicious' letters containing unknown substances that were mailed to state election officials and congressional offices, while NBC News reported suspicious mailings sent to congressional and secretary of state offices. Mailed packages containing a powdery substance led to the evacuation this week of election offices in at least two states, Louisiana and Oklahoma, and the Ohio secretary of state said the Postal Service intercepted a package containing a white powder intended for its office, the LA Times reported. The Philadelphia Inquirer said news of the letters comes just three weeks before Election Day and is reminiscent of a similar threat in 2023, when election offices in six states received mailings that contained a white powder.

Latest: Federal authorities, the FBI and the Postal Service among them, are investigating letters with 'suspicious substances' mailed to congressional and election offices nationwide, The Philadelphia Inquirer, ABC News and PBS NewsHour reported, and packages containing a powdery substance led to the evacuation this week of election offices in at least two states, Louisiana and Oklahoma, the LA Times reported.

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How it unfolded

  1. Thursday 15 October

    Federal authorities, the FBI and the Postal Service among them, are investigating letters with 'suspicious substances' mailed to congressional and election offices nationwide, The Philadelphia Inquirer, ABC News and PBS NewsHour reported, and packages containing a powdery substance led to the evacuation this week of election offices in at least two states, Louisiana and Oklahoma, the LA Times reported.